Reporting networks such as PSK Reporter allow researchers in near real time to evaluate space weather conditions, particularly changes in the earth's ionosphere.There are multiple examples of PSK Reporter being used to aid researchers as well as aiding in the prediction and understand of radio propagation. For example, observations made during the 2017 eclipse where over 5,000 amateur radio operators reception reports helped researchers document the eclipse's effect on HF communications
https://dr2w.de/dx-propagation/
Understanding the Band Conditions Banner อธิบายเป็น pdf
คลิก banner ข้างล่างจะมี link ไปต้นฉบับ